RootsChat.Com

The 1921 census can be found on Find My Past. Carl can be found on that census.

It looks very much as Arthur K has said that he married for a second time in 1920 - in Halstead, Essex to Lavinia Gardner.

The only possible death I can see for Louisa between 1911 and 1920 is showing on the Groindex  as Louisa Petersen ( death age 65) Jul - Sep 1917 in Reigate, Surrey. It might be worth obtaining a digital image of this death to see if it is the correct one. ( I note that the surname for this death has been transcribed as Peterson on FindMyPast.).

William

Have you just got Carl's probate information from the index, or have you seen the will itself? Sometimes wills contain instructions about where someone wishes to be buried.

Do you know if the family ever lived in Surrey? There's a Louisa Petersen of the right age who died in the Reigate district in 1917 (from FreeBMD). That might give you somewhere else to look for a burial. However....

I see from the probate index that Carl died in Halstead. From FreeBMD again, then if that 1917 death is correct, it looks as though he married a Lavinia Gardner in the Halstead district in 1920. She seems to have died in the Colchester district in 1955; her will went to probate, and the executors were Thomas George Petersen and his wife. I wonder if it mentioned Carl?

So, a few things to look into - I'll let others look for burials etc.