ob. obit; deceased.
obiit. (Latin) He or she died.
obit Obituary.
oral will Nuncupative will; oral will declared or dictated by the testator in his last sickness before a sufficient number of witnesses and afterwards put in writing.
Orphan A child whose parents are dead; sometimes a child with one deceased parent.
Orphan Asylum An orphanage.
O.S. Old Style, referring to the Julian calendar. (which see)
o.t.p. Of this parish.
Overseer of the Poor An honorary parochial official, whose job it was to collect the Poor Rate tax.