LOL

, thats what makes this lark interesting Rob !
so we've seen Mrs H on census with DoBs of 1844 and 1850 .... names of Eliza, Elizabeth and 'Olive' .... PoBs of Exeter & Taunton
so how about this !1871 - RG10/1146; Folio: 81; Page: 5; - Portsea Island district
25, Sydenham Terrace Frances Hawkins 27 Married Head Wife of Seaman abroad born Devon, Taunton
Percival Hawkins 8 son born Devon, Plymouth
Maybe she wrote Francis as Head on the schedule, then changed it to be her age etc, and the lad is born right after that marriage, and in Plymouth ...
Cant wait to see that Marriage Cert !
Added: cant see them with same PoBs etc in 1881, altho there is a Percy / Frances combo in the east end, but with kids who also should have been on the 1871, so doubtful but ....