Monica, will you marry me?
You put Jessica Flether & Miss Marple to shame!
Yes, I agree, the post on Bridget's death does suggest her son John was local, but I've hadn't been able to find him. I have the 1861, 1881, & 1981 census images for Bridget, but can't find her in 1871.
I also have Charles Boyle and Mary Porter's marriage cert. It lists Mary's father as John Porter, Labourer, dead, not William, although her birth cert lists it as William. However, thinking about it, her mother Bridget had remarried to John Burns by this point, which could be the reason for the mistake. (Mary married in 1858, but her half-sister Helen Burns was born in 1857).
(As we have so many Johns, I'm adding a generation mareker - William is {a}, his children are {b} etc)
An alternative is that William {a} was his middle name. We know from his marriage his father was John. Perhaps he was John William Porter, and went by William to avoid confusion?
Yes John {c} (William {a} and Bridget's grandson) was in Grangemouth circa 1892 to 1894, presumably working at the shipyard there. There are still a few Porters in Grangemouth today, but I don't think there's a link.
He was born in Ireland around 1864.
So you've found his father, John {b} - that's brilliant! We know his (presumably) 1st wife was Martha Galbraith or Lawrie from John's {c} marriage and death certs. Time to get some more credits on SP...
On William's {c} and Janet's {c} birth certs it gives John {b} and Agnes' marriage as 29/09/1891 in Falkirk.
Putting it all together (I've just checked all the births, deaths and marriages on SP - it took a while, and I found another wife (no wonder he started having kids at 14!));
Timeline for John Porter {b}John Porter {b} born 14/10/1848, Raphoe, Co Donegal
John Porter {b} baptised 03/11/1848, Raphoe, Co Donegal
John Porter {b} married Martha (Galbraith on John's {c} death or Lawrie on John's {c} marraige)
John Porter {c} born 1864, Co Donegal
Martha dies circa 1864-1872
John Porter {b} married Margaret Hislop, 04/07/1872, Greenock
Margaret Porter born 02/02/1873, Greenock
Sarah Porter born 12/08/1874, Greenock
William Porter {c1} born 29/11/1876, Greenock
Mary Porter born 11/05/1879, Greenock
Charles Porter born 12/11/1882, Greenock
Margaret dies 13/06/1883, Greenock, of Pneumonia
John Porter {b} married Mary Bain, widow of James Currie, 14/03/1887, Greenock
Susan Porter born 12/04/1888, Greenock
Mary dies 16/10/1889, Greenock, of Pneumonia
John Porter {b} married Agnes Munro 11/10/1891, Falkirk (subsequent births all state marriage was 29/09/1891 - given John's numerous weddings, we can forgivehim getting the date wrong)
Janet Porter born 13/08/1892, Grangemouth
William Porter {c2} born 09/11/1893, Grangemouth
Joseph Porter born 16/10/1895, Govan
John {b} dies 28/03/1916, Greenock, of 'Senile Sebilitic'? & Enlarged Prostate & Retention of Urine
Agnes dies 08/01/1957, Alloa, of Congestive Cardiac Failure (notified by son-in-law John Clark, 104 Greenfield Street, Alloa)
Timeline for John Porter {c} for comparisonJohn Porter {c} born 1864, Co Donegal
John Porter {c} married Elizabeth McDermott 08/12/1884, Rothesay
John McDermott Porter {d} born 05/01/1885, Rothesay
James Campbell Porter born 09/09/1886, Bowling
Elizabeth Campbell Porter born 17/02/1888, Bowling
Martha Galbraith Porter born 22/02/1890, Polmont
William Porter {d} born 03/03/1892, Grangemouth
Thomas Campbell Porter born 24/01/1894, Grangemouth
Richard McDermott Porter born 02/03/1896, Greenock
Margaret Ford Porter born 22/01/1898, Greenock
George Smith Porter born 17/06/1900, Greenock
Charles Brown Porter born 09/08/1902, Greenock
John Porter {c} died 27/03/1932, Greenock
John Porter {c} dies 27/03/1932, Greenock
Elizabeth McDermott dies 05/05/1950, Greenock
Sugarbakers, I'm attaching the informant part Eleanor (Helen)'s death cert to see if you think it is John Corns?;