Soon his power for doing good was immensely increased. In 1670 his father died and left him a princely fortune which, true to his generous nature, he determined to use for the good of others, and especially for the good of the despised and persecuted Quakers. The Crown owed Penn's father about L16,000, which the King, with his extravagant habits, was not likely to pay for many a day. William Penn, therefore, decided to ask the King to pay the debt not in money but in land. The good-natured Charles, thinking this was an easy way to cancel the obligation, readily granted to William Penn an extensive tract of land lying on the west side of the Delaware River. [Illustration: Penn's Slate-roof House, Philadelphia.] Penn wished his new possession to be called Sylvania, or Woodland, but the King insisted upon calling it Pennsylvania, in honor of Penn's father. Upon receiving his grant, Penn at once sent word to the Quakers that in Pennsylvania they could find a home and a resting-place from their troubles. Penn's leading aim was to plant a self-governing colony, whose people should have justice and religious freedom. Hundreds of Quakers eagerly took advantage of the favorable opportunity which Penn thus offered to them. During the year 1681, when the first settlement was planted in Pennsylvania, something like 3,000 of them sailed for the Delaware River. The next year Penn himself sailed for America, although he left his wife and children behind. He selected the junction of the Delaware and Schuylkill rivers as the site for his city, and called it Philadelphia, or the City of Brotherly Love, in token of the spirit which he hoped might prevail throughout his colony. He laid out the city most carefully, giving the streets such names as Pine, Cedar, Mulberry, Walnut, and Chestnut, after the trees he found growing there. When the first settlers came to Philadelphia, some of them lived in caves which they dug in the high river-banks. The first houses, built of logs, were very simple, containing only two rooms and having no floor except the earth. Philadelphia grew so fast, however, that by 1684 it had 357 houses, many of which were three stories high, with cellars and balconies. [Illustration: A Belt of Wampum Given to Penn by the Indians.]