1911 England & Wales Census Search - Free till 18th November

I just remembered to use Find My Past's free England & Wales Census Search today.

I haven't made much progress, except in finding details about Marchantons that I hadn't known before.

In the census entry for Mary Marchanton (born 1853),  wife of James, for 'Condition /Yrs married', it says Am.

I'm wondering what the "Am" could mean.

Any ideas, please ?