Of over 3,400 Tasker records on the IGI website for the USA, there seem to be only a few families with records before 1700. Click on the links to go to other genealogy websites.

Thomas Tasker, born about 1640-1645 somewhere in England, sailed for the USA in 1668, married Rebecca (or Eleanor?) Brooke in 1682, and became known as Thomas Tasker from Battle Creek, Calvert County, Maryland where he died in 1700. The couple had several children in Saint Marys, Maryland, including Elizabeth, Thomas, and the most famous, Benjamin, in 1690. There's more about Thomas at MJP Grundy's website and at Tricia's Southern Genealogy homepage.
Benjamin Tasker went on to be one of the founders of the Baltimore Ironworks Co in 1731, five times mayor of Annapolis, and Provincial Governor of Maryland from 1752 to 1753. He married Ann Bladen in 1711 and they had a son Benjamin Tasker, Jr. (1720-1760) and daughter Anne Tasker (1723-1817), who married the much older Samuel Ogle (1694-1752). Benjamin junior died at only 39 years old, and his father, who died in 1768, was buried alongside his son in St. Anne’s Churchyard in Annapolis. See more photos and information about Benjamin at Georgia Meadows' website

(photo courtesy of Georgia Meadows)

William Tasker, born somewhere in England in about 1656, married Mary Adams and settled in Madbury, Strafford, New Hampshire where John and Mary were born about 1680-1688. Mary married Samuel Perking in 1703, whilst John went on to marry Judith Davis in 1718, establishing New Hampshire Taskers.

There were also two Taskers, Thomas and John, possibly brothers, who were transported to Maryland in 1674 - as yet we're not sure what their crime was!

There is also a record from Wisconsin of a Mrs William Tasker of Steynton, Pembrokeshire, Wales, born about 1615 with a daughter Margaret Tasker born in 1637.

And of course there is the famous Magdalene Tasker, who was born at Cavanacor, County Donegal in 1634, who married Captain Robert Bruce Pollock in 1661. They and their children emigrated to America and settled in Somerset County in Maryland where she died in 1726. In America the family shortened their name to Polk. James Knox Polk (born 1795), the great, great, great grandson of Magdalene Tasker Polk, became the 11th American President in 1845 and held the Presidency until his death in 1849. There's more about Irish Taskers here.