It is likely that the "Holland streets" take their names from Holland House which appears in an advertisement for a sale of work at St Columba's Church, Knock in 1890. The owner of the house was Joseph Holland. Joseph Holland's name later appears in a death notice for his 18 year old daughter Clara on 15 November 1899. In online research, there were suggestions that Clara Road was named after the young woman.
According to Ros Davies, Joseph Holland was a stonemason, artist, antique dealer, landlord and landowner of 800 acres of East Belfast. He died in 1900 in Cherryville Cottage, Sandown Rd (rosdavies.com).
Holland Drive in part had previously been called Ervine Street. "Resolved - That the name "Holland Drive" be approved for a new street on Mrs. Ida Barron's property, situated off Upper Newtownards Road". (4th March 1930)