Son: FRANCIS THOMAS LAURY
Already have US Birth Nov 1870, UK Census 1881, Shipping>US 1881, US1900
He would have been born too late for the US 1870 Census.
I think this may be him in 2 other US Census:--
1910 - Cedar Twp, Cherokee Cty, Iowa StateHead: Frances T LAWRY, 39, marr 9 yrs (is 1st marr), b California to English Parents Occ: Farmer - general Farm (Employer), Own Farm with a Mortgage.
Wife: Harriot LAWRY, 41 marr 9 yrs (is 1st marr)- once for 9 yrs, has never birthed any children. b Iowa of Indiana parents.
Servant: Earl JACOBSEN, 16, single, b Nebraska of Danish father, US Mother, Occ: Farm Laborer Working out (Worker)
1920 - Cedar Twp, Cherokee Cty, Iowa StateHead; Frank T LAWRY . 49, b California to English parents, Occ: Farmer - Gen(eral) Farm, Own Account, Owns the Farm.
Wife: Harriet LAWRY 51, b Iowa to Indiana parents.
Daughter: Gladys L(or E) LAWRY, age 3yrs & 11 mth, b Kansas to US born parents.
Servant Rutter L CASTLE (white male), 42, b Iowa to Ohio father, Illinois mother, occ: Farm Laborer
I would hazard a guess and strongly suggest Gladys is adopted.
1930 I can't locate them?This MAY be his wife's death - but her Birthplace is not matching 1910/1920Census - if indeed the Census are them! And if the Census is correct, perhaps the CANADA birthplace on Death record is in error?
California Death Index, 1940-1997 RecordName:LAWRY, Harriet Hunter
Sex: (F)
Birth Date:24 Aug 1866 , Canada
Death Date:19 Mar 1946 , Alameda
Mother's Maiden Name:MACKAY
Father's Surname:HUNTER
If she was Canadian, it may explain why I can't find them 1930

Unless I've plain missed them, perhaps could be in Canada on a visit?
Cheers
AMBLY