perhaps anyway is of interest , is a misspelling etc
http://freepages.genealogy.rootsweb.ancestry.com/~rosdavies/William MATTMAN (sic) . Donaghadee b. Donaghadee; aged 56 ; an overseer; living in Glenaerm New Row, Tickmacrevan parish Co. Antrim in 1851 with his wife Agnes aged 53 (b. Donaghadee ) & son Thomas aged 17 (an apprenticed baker b. Co. Antrim)
so that maltman if he is one b ~1794-5 donaghadee, might be a cousin etc
have you searched for church records eg for 1st Presbyterian church, ros davies has
North of Ireland FHS (
http://www.nifs.org ) has baptisms 1793-1921 & marriages 1805- 1936 & communicants 1879-1916 ; no graveyard
http://www.presbyterianireland.org/congregations/donaghadee1.html http://www.emeraldancestors.com have a copy of the church booklet of 1925 with a church history on subscription
or try PRONI, Belfast
https://www.nidirect.gov.uk/sites/default/files/publications/Guide_to_church_records.pdfor the same church
North of Ireland FHS (
http://www.nifs.org ) has baptisms 1793-1921 & marriages 1805- 1936 & communicants 1879-1916 ; no graveyard
http://www.presbyterianireland.org/congregations/donaghadee1.html http://www.emeraldancestors.com have a copy of the church booklet of 1925 with a church history on subscription
http://freepages.genealogy.rootsweb.ancestry.com/~rosdavies/http://www.irishgenealogyhub.com/antrim/tithe-applotments/tickmacrevan-parish.php#.Vwk-8GOoc5R1832 doesn’t include any Maltmans, if ths son b ~1834 it could be recorded in this parish see PRONI Belfast guide to church records
but thinking why did he go to there, spouse, coal ? mining, no I found he leased a forge in glenarm, more likely learnt from his father
ancestryireland has
Francis Maltman 1816 Alexander could be a brother
William Maltman 1823 father William Down
could this be a cousin
Beggs were living nearer to Ballywalter and Ballyhalbert alias St. Andrew
possibly in or near balltdoonan but ballydorn is in killinchy
oops reading others, I should have stopped earlier
stopping now good luck