Hello Raymond,

Your marriage for Mary Ann Quayle looks right, so it would be good to confirm it. The German 1881 census has Mary Ann CHRISTIAN aged 36 b.Maughold with husband Daniel aged 32 b.German, fisherman, with son Philip Danl. aged 2 b.Peel, daur Mary Eleanor aged 1 b.Peel, and most importantly Jane Agnes QUAYLE, niece, aged 12 b. Maughold.

Unfortunately I can't find niece Jane Agnes in Maughold records to be able to confim that she was the daughter of one of Mary Ann Quayle's many siblings.

There is a marriage for her in Brian Lawson's indexes: CHILDES, George James married 17 Sep 1893 C rus 76 QUAYLE, Jane Agnes. The cert would give her details.

Brian's births index has CHRISTIAN, Mary Eleanor born 17 Mar 1880 Peel, daughter of CHRISTIAN, Daniel & QUAYLE, Mary Ann.

When you asked before about Mary Ann's marriage I found that it wasn't in Maughold, and suggested that you look at (or have someone else look at) the will in Brian Lawson's index which might be her mother Mary Corkill's one - it would be worth a look at a LDS Family History Centre to see whether children's married names are given:
QUAYLE, Mary 1878 Ram E 31 0106486.

Also, if you look at her marriage entry that will give you her father's name and occupation.

Sue