An elderly Perth man charged with murdering his 83-year-old wife has appeared in court via video link from prison on Wednesday.

Harold Barclay, 85, was charged with the murder of his wife Nancy after police were called to their home on Brompton Place in Alexander Heights last week.

The elderly woman was found dead inside her Alexander Heights home on Brompton Place. Credit:Heather McNeill

Police found Nancy's body at the home, and Mr Barclay assisted police with their inquiries throughout the investigation.

Neighbours told 9 News Perth the couple had lived at the home for nearly 30 years, and Nancy had suffered from severe dementia.