The following from the IGI @ www.familysearch.org

JOHN BERNARD FREDERICK SPENCER

Christening: 09 OCT 1813 Ramsey, Isle Of Man, England

Parents:
Father: JOHN SPENCER
Mother: CATHARINE MARIA (no surname given for mother)

Again from IGI:
A John Spencer married Catherine Haskins/Hackins at Maughold 27 August 1812.

Also a possible connection this again from IGI:
John William Spencer married Mary Leach at KK German 13 February 1862

The following child was buried in Maughold in 1882 and with the LaMothe name, must be a connection:

SPENCER, Alfred Aldyn Lamothe aged 2 bd Maughold 25 Jan 1882 (from Brian Lawson's site www.lawsons.ca)

At the following link to "Family of La Mothe", if you scroll down a way, you will find mention of a connection to a Spencer with children.....(you may have details of this)

http://www.isle-of-man.com/manxnotebook/famhist/families/lamothe.htm

Hope this helps.

Elizabeth